/******************************************************************************
 *                                                                             *
 * License Agreement                                                           *
 *                                                                             *
 * Copyright (c) 2003 Altera Corporation, San Jose, California, USA.           *
 * All rights reserved.                                                        *
 *                                                                             *
 * Permission is hereby granted, free of charge, to any person obtaining a     *
 * copy of this software and associated documentation files (the "Software"),  *
 * to deal in the Software without restriction, including without limitation   *
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,    *
 * and/or sell copies of the Software, and to permit persons to whom the       *
 * Software is furnished to do so, subject to the following conditions:        *
 *                                                                             *
 * The above copyright notice and this permission notice shall be included in  *
 * all copies or substantial portions of the Software.                         *
 *                                                                             *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR  *
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,    *
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE *
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER      *
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING     *
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER         *
 * DEALINGS IN THE SOFTWARE.                                                   *
 *                                                                             *
 * This agreement shall be governed in all respects by the laws of the State   *
 * of California and by the laws of the United States of America.              *
 *                                                                             *
 * Altera does not recommend, suggest or require that this reference design    *
 * file be used in conjunction or combination with any other product.          *
 ******************************************************************************/

#ifndef __BITS_H__
#define __BITS_H__

#define _ones(nbits)                    ((1UL<<nbits)-1)
#define _mask(nbits,lshift)             (_ones(nbits) << lshift)
#define _get(nbits,lshift,value)        (((value) >> lshift) & _ones(nbits))
#define _field(nbits,lshift,value)      ((((uint32_t)value) << lshift) & _mask(nbits,lshift))

#define ones(field)                     _ones(  field##_NBITS )
#define mask(field)                     _mask(  field##_NBITS, field##_LSHIFT )
#define get(field,value)                _get(   field##_NBITS, field##_LSHIFT, value)
#define field(field,value)              _field( field##_NBITS, field##_LSHIFT, value)

#endif
